2003 GMC Sierra 1500 HD Engine Parts


  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Engine Knock Sensor & Harness Kit V8 6.0L

    Ships Same Day for orders placed by 4 P.M. ET

    $89.95
    Part #: 1AEEK00589

  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD V8 6.0L Downstream O2 Oxygen Sensor Passenger Side

    Ships Same Day for orders placed by 4 P.M. ET

    $28.95
    Save 33%
    List: $42.95 Save: $14.00
    Part #: 1AEOS00114

  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD V8 6.0L Upstream O2 Oxygen Sensor

    Ships Same Day for orders placed by 4 P.M. ET

    $28.95
    Save 33%
    List: $42.95 Save: $14.00
    Part #: 1AEOS00072

  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Downstream O2 Oxygen Sensor

    Ships Same Day for orders placed by 4 P.M. ET

    $29.95
    Save 32%
    List: $43.95 Save: $14.00
    Part #: 1AEOS00074

  • Dorman

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Exhaust Manifold Hardware Kit Dorman 03413B

    Ships Same Day for orders placed by 4 P.M. ET

    $21.95
    Save 33%
    List: $32.95 Save: $11.00
    Part #: 1AEEM00731

  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Engine Knock Sensor Harness with Dual Connectors with Grommets

    Ships Same Day for orders placed by 4 P.M. ET

    $26.95
    Save 13%
    List: $30.95 Save: $4.00
    Part #: 1AZWH00060

  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD V8 6.0L Downstream O2 Oxygen Sensor with Install Tool Passenger Side

    Ships Same Day for orders placed by 4 P.M. ET

    $37.95
    Save 35%
    List: $57.95 Save: $20.00
    Part #: 1AEEK00685

  • Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Engine Knock Sensor Harness with Dual Connectors with Grommets General Motors OEM 12601822

    Ships Same Day for orders placed by 4 P.M. ET

    $69.95
    Save 33%
    List: $104.95 Save: $35.00
    Part #: GMZWH00005

  • Dorman

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Black Keyless Remote Insert & Case for Models with FCC ID LHJ011 or FCC ID MYT3X6898B Dorman 13618

    • FCC ID: FCC ID MYT3X6898B
    • FCC ID: FCC ID LHJ011
    • Color: Black

    Ships Same Day for orders placed by 4 P.M. ET

    $19.95
    Save 31%
    List: $28.95 Save: $9.00
    Part #: 1AKRR00033

  • Dorman

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Engine Oil Dipstick Tube V8 6.0L Dorman 917-303

    Ships Same Day for orders placed by 4 P.M. ET

    $34.95
    Save 33%
    List: $51.95 Save: $17.00
    Part #: 1AEMX00136

  • AC DELCO

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Engine Oil Pump ACDelco 12586665, 12678151

    Ships Same Day for orders placed by 4 P.M. ET

    $111.95
    Save 33%
    List: $166.95 Save: $55.00
    Part #: ACOPM00001

  • Dorman

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 2001-03, 2005-06 GMC Sierra 1500 HD Crankshaft Position Sensor Dorman 917-754

    Ships Same Day for orders placed by 4 P.M. ET

    $43.95
    Save 42%
    List: $75.95 Save: $32.00
    Part #: DMECS00003

  • Dorman

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Green Camouflage Keyless Remote Insert & Case for Models with FCC ID LHJ011 or FCC ID MYT3X6898B Dorman 13618GNC

    • FCC ID: FCC ID MYT3X6898B
    • FCC ID: FCC ID LHJ011
    • Color: Green Camouflage

    Ships Same Day for orders placed by 4 P.M. ET

    $17.95
    Save 44%
    List: $31.95 Save: $14.00
    Part #: DMKRR00009

  • Dorman

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Green Camouflage Keyless Remote Insert & Case for Models with FCC ID LHJ011 or FCC ID MYT3X6898B Dorman 13618GYC

    • FCC ID: FCC ID MYT3X6898B
    • FCC ID: FCC ID LHJ011
    • Color: Green Camouflage

    Ships Same Day for orders placed by 4 P.M. ET

    $20.95
    Save 36%
    List: $32.95 Save: $12.00
    Part #: DMKRR00010

  • FELPRO

    Guaranteed to Fit Your

    2003 GMC Sierra 1500 HD

    2003 GMC Sierra 1500 HD Cylinder Head Bolt Kit 15 Piece Set 1st Design FEL-PRO ES72173

    • Quantity: 15 Piece Set

    Ships Same Day for orders placed by 4 P.M. ET

    $39.95
    Save 42%
    List: $68.95 Save: $29.00
    Part #: FPEMX00013
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